Hutson



grate-bars.

CHARLES F. nurses or conunnon,Y Missouri.

l Letters Patent No.100,631, dated March 8,1870.

HoLLoW Guam r'oR STEAM-Bomans.

Th Schedule referred to in these Letters Patent and making part of thesame.

To all whom it may concern l Be it known that I, CHARLES E; Horses, .ofCommerce, in the county of Scott, and State ot' Missouri, have madecertain. new and useful Improvements iny Gratos for Heating Feed-Waterfor Boilers, and similaipurposes; and I dov hereby declare the followingto be a full and true description thereof', reference being had to theaccompanying drawings and to the let-ters of reference marked thereon.

This invention relatesto the manner of passing water through hollowgrate-bars, and connecting thev water-flow at times with a steam (orsteam Aand hotwater) jet from theboiler, so as to discharge mnd, orsediment generally, at aproper mud-drum. i

Said invention relates to the detail arrangement and construction of theparts, to enable the same to act more perfectly, to form an improvedfeed-water heater. l l v To enable those herein skilled to make and usemy said invention, I will now more fully describe the same,

referring tothe accompanyingi l Figure l as a rear-end view, showingcertain parts in section, as hereafter explained. AFigures 2 and 3,respectively, are ."de elevation and plan.

Figure 4 is a detail sectional elevation of a series of The grate-barsAJ willbesupported `in the usual `manner upon proper foundations, so.`that fuel may be placed thereon, and b'e consumed in a combustion- Atthe joint of the pipe C with the skin of the boiler, a suitable cap willbeplaced, tirmly securing the pipe C to the boiler,and makingsteam-tight joint, inthe usual manner.

` Said pipe C hasa valve, c, operated by hand-wheel, or in any othermanner, by the operator, so as to cut o the steam or waterin its passagefrom the boiler, and prevent the entrance of feed-water from the pipe B.

A second check-valve, b', is placed in the feedpipe B, beyond; the jointwith said pipe ofthe .pipe (l. This check-valve again is arrangedtoprevcnt a rcturn How of the feed-water immediately from thegrate-bars.

The feed-water passes from the pipe B into the grate-bars A, and throughthe same to the influent pipe I), and from this into the boiler as afeed-water supply. f

The connection of the pipe D with the boiler is in the ordinary manuel',and said pipe has a check-valve,

d, ot' proper form to -prevent the return flow of thel water. y 4 y Asthe feed-water passes from the pipe B through the grate-bars, it becomesheated, and, at the same 4 time, acts to reduce the heat of thegrate-bars, to prevent them from being' consumed bythe fuel and byoxidation. y

In order to retainthe sediment out of the feedwater, so as to preventthe same from depositing in the grate-bars, or from accumulating in theboiler,`I arrange in connection wit-lrthe feed-pipe B a muddrum, E,about the side pipe 11, which connects directly with said pipe B, andpasses steam-tightly through the drum E, and is perforated for that partof its length which is within said drum. more clearly indicatedin fig.1, where the mud-drum E is shownin sectional elevation, to reveal theperforated pipe F.

The pipe F has a suitable blow-off valve, f.

lt is plain that the feed-water, as it rises from the pipe B to theheating-chamber formed by the gratebars, will deposit a great deal ot'its lime, sand, and other sedimentary matter, aud this will pass to theside pipe F and thc drum In order to wash out said drum, the operatoropens the jet-pipe valve c,

and the inowing jet ofsteam, or steam and hotwater, from the boiler,striking against the feed-pipe iiow in B, will cause the sediment in Eand F to pass out at the opened blow-ott1 valve j'. time, a reilow ofthe water out from the grate-bars andiniluent pipe I) cannot takeplace', because ot the cheek-valve b', while the necessary feed-waterflows through the grate-bar still occur, owing to the pressure of steamfrom pipe C, which operates more or less powerfully through the pipe B,as well as the lpipe It.

In order to form the grate-bars removably, so as to cause as littledamage as may be in case one bar is disabled, the said bars consistprincipallyiof' the usual wrought-iron-pipe part A1, joined, by 'a screwor flange-joint, with the head castings A2.

' The head castings of two adjoining bars abut at' the edge a, and, tomake a packed joint, a doublecone packing-ring, al, is inserted. The.through-bolt, a2, then, in drawing up, makes more clearly appears infig. 4.

This is At the same the joint perfect, as

The construction of all` of said parts is simple, inand arranged withvalves and stop-cocks, substantially suring great durability, and thearrangement; of the as set forth.

whole device, with the cheek-valves, insures great In testimony of saidinvention, I have hereunto snfet-y, while the operation of the whole issuch that set my hand, this 23d day of September, A. D. 1869, :iy lossof heat is avoided to great degree. in the presence of Having thus fullydescribed my invention, C. E. HUTSON. That I claim is- Titnesses: Thecombination of the feed-pipe B, jet-pipe C, GEORGE P. HERTHEL, Jr., sidepipe F and drum E, grate A, and iniuent D, WILLIAM W. HERTHEL.

